SU1239639A2 - Device for monitoring pulse repetition period - Google Patents

Abstract

This invention relates to instrumentation technology. The aim of the invention is to expand the functionality of the device. The known device includes a clock pulse generator 1, trigger counter 2, delay lines 3 and 9, trigger distributor 4, triggers 5. and 6, receiver 8, output trigger 11f first and second additional triggers 7 and 10. Third and fourth additional triggers are introduced triggers 12 and 13, which allows you to achieve the goal set. The unit states of triggers 12 and 13 indicate that the period under study is correspondingly less or more than the nominal one. The next period with a nominal duration sets, respectively, trigger 12 or 13 to the state O. 1 Il. W with y with with O5 with with 5

Description

“,

This invention relates to a control and measuring equipment.

The aim of the invention is to expand the functionality of the device.

The drawing shows the block diagram of the device.

The device contains a generator of 1 clock pulses, a trigger count 2, the first delay line 3, the trigger distributor 4, the first trigger 5, the second trigger 6, the first additional trigger 7, the receiver 8, the second delay line 9, the second additional trigger 10, the output trigger M, third and fourths are complementary triggers 12 and 13.

The output of the generator 1 clock pulses is connected to the first input of the trigger counter 2, the outputs of which are connected respectively to the clock input of the first trigger 5, which prohibits them from the trigger trigger counting. limiter 4 through the first delay line 3. with the first input of the trigger distributor and the clock input of the second trigger 6, the unit input of which is connected to the information input of the first trigger 5, the inverse output of the first additional trigger 7 and the input of the second delay line 9, the output of which is connected to one A single input of the second additional trigger 10, the inverse output of which is connected to the clock input of the output trigger 11, the adversary output of which is connected to the information input of this trigger. The direct output of the first trigger is connected to the information input of the third additional trigger 12, and the inverse to the second input of the trigger distributor 4, three outputs of which are connected respectively to the single input of the first trigger 5, information input of the second additional trigger 10 and the fourth additional output 13, the information input of which is connected to the prohibition input of the trigger counter 2 by the informative input of the second trigger 6 and the direct output of the first th additional trigger 7, a single input coupled to a direct output of the second flip-flop 6, and the input clock output from receiver 8 and the clock input of the third flip-flop 12 further.

five

39639 2

The device works as follows.

The signal from the output of receiver 8 enters the clock input of the first additional trigger 7 and switches it from to O, since the information input of the first additional trigger 7 receives the signal O from the output of the trigger distributor Q divider 4. After switching the first additional trigger 1 removes the prohibition from the installation input to 1 of the second trigger 6 and the second additional trigger 10 - and changes the sig. On the information input of the first trigger 5 s O on 1. The signal O from the gf em output of the first additional ton Eigger 7 is fed to the information input of the second trigger 6 by setting it to switch and the reset input of the trigger counter 2, If at this point the first trigger 5 is not on, the signal from the output of trigger meter 2 through the first

2 / J delay line 3 arrives at the clock inputs of the trigger distributor 4 and the second trigger 6, switches the second trigger 6 to the trigger distributor 4 does not work, because the single state of the first trigger 5 does not allow the trigger distributor to enable the trigger: 4.

Second trigger 6, by switching to. o sends the signal O to the single input of the first additional trigger 7 and switches it to I, while the signal O from the inverse output of the first additional trigger 7 arrives at the information input of the first trigger 5 and to the single input of the second trigger 6 and switches it to the initial one state- which removes the prohibition from the first additional trigger 7. The signal from the direct output of the first additional trigger 7 removes the prohibition of the trigger counter 2. Therefore, at this moment the device is in the initial state and triggers The second counter 2 starts counting the pulses of the clock generator 1, i.e. the arrival of the signal from receiver 8 is practically the beginning of the measurement of the duration of the period of the output 5S signal a of receiver 8,

If the duration of the period of the output signal of the receiver 8 is within the specified limits, then in this case

35

40

45

50

In addition, the Trit Hero Counter 2 counts the required number of pulses received from the 1 clock pulse generator, and the signal from the trigger counter 2 output switches the first trigger 5 to O, which removes the prohibition from the trigger distributor 4. The receipt additional trigger 7 notifies about the end of the analyzed period and switches it to O. Switching the first additional trigger 7 removes the ban from the second trigger 6 and the second additional trigger 10, squeezes on the information input to the inclusion of the second trigger 6 and sends to the reset input of the trigger counter 2 a signal O

As a result, at the output of the trigger counter 2, signals appear, one of which turns on the trigger distributor 4, and the other through the first delay line 3 and the trigger distributor 4 enters the single input of the first trigger 5 and switches it to I. This switching switches the trigger distributor 4 in the initial state, which removes the ban from a single input of the first trigger 5,

In addition, the signal from the output of the first line 3 of the delay enters the clock input of the second trigger 6 and transfers it to O. The second trigger 6 switches to the first additional trigger 7 to 1, which leads to the removal of the prohibition from the reset input of the trigger counter 2 and switching to 1 second trigger 6, and also prepares for a new switch to O the first trigger 5 and through the second delay line 9 switches the second additional trigger 10. Switching the second additional trigger 10 causes the switching of the output trigger 11.

. If the period of the signal from the output of receiver 8 is longer than the nominal one, then after the trigger counter 2 counts a certain number of pulses of the current pulse generator 1 and switches the first trigger 5 to O, the trigger counter 2 continues to count the pulses of the clock pulse 1, as a result trigger counter

396394

2, a signal appears that turns on the trigger valve 4. Since the trigger valve 4 is turned off before switching to the O 5 of the first additional trigger 7,

then turning it on does not switch the second additional trigger 10, so

as at its single entrance presence-. There is a prohibition signal from the first

to the additional trigger 7. The fourth additional trigger I3 from the same switching signal of the trigger distributor 4 switches to 1, since at the information input it has 1 from the single output of the first additional trigger 7. The single state of the fourth additional trigger 13 indicates that that the signal from the output of 20 g of the receiver is 8 grams; it has a period longer than the nominal one.

After switching on the trigger distributor 4, the trigger counter 2 5 continues to count the pulses of the generator I of clock pulses, but the state of the elements of the device does not change until arrival; At the clock input of the first additional trigger 7 of the new pulse, after which all elements of the device go into the initial state and the measurement of the next signal from the output of the receiver 8 begins. Since the second additional trigger 10 does not switch, the output trigger 11 does not switch.

The next period with the nominal duration will establish the third additional trigger 12 in O at the zero level C of the single output of the first additional trigger 7 and the switching pulse of the trigger distributor 4.

five

0

If the duration of the signal period from the output of the receiver 8 is less than the nominal, then the first trigger 5 does not transfer to and does not remove the ban from the distributor, and therefore the second additional 10 and output 11 triggers will not work. A high level with a single output of the first trigger 5 prepares to switch to | the third additional trigger 12. According to the premature impulse from the output of receiver 8, the third additional trigger 12 is set to 1, which indicates that the period under study is less than the nominal value. 512396396

The third period and the fourth period will be added by the third period with a nominal one; additional third triggers will be installed, informational trigger 12 in O.

 trigger connected to direct output

Claims (1)

The invention formula of the first trigger, and the clock input with the receiver output, information The device dp control of the period of the entrance of the fourth additional triggering of pulses according to auth. The gera is connected to the direct output of the second no. 794564, which is characterized by a complementary trigger, and by the fact that, in order to expand the function of the input, to the first output of the device, in the tunger distributor.